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Finding the Fourth Proportional to 92,754.18, 128,000.07 and 51,918.33

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Solution

The fourth proportional to 92,754.18, 128,000.07 and 51,918.33 is: 71,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,754.18 : 128,000.07 = 51,918.33 : x
  2. Step 2: Convert to fraction form
    92,754.18/128,000.07 = 51,918.33/x
  3. Step 3: Cross multiply
    92,754.18x = 128,000.07 × 51,918.33
  4. Step 4: Simplify right side
    92,754.18x = 6,645,549,874.28
  5. Step 5: Solve for x
    x = 6,645,549,874.28/92,754.18
  6. Step 6: Final answer
    x = 71,646.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.